One thing that has come up many, many times in Warcraft, and one that will continue to stir people is the distribution of loot. You need only look at the comments for any weapon (pretty much) on thottbot.com to see what I mean - who gets what? The recent addition of dual spec has not made this any easier. In pick-up groups on my server the most usual thing is to roll on items that are appropriate for your current role. If you are a warrior tank, you get to roll on defensive plate. If a kitty druid, agressive leather.
For, say, 90% of items this works fine. For 90% of players that works fine. Most of the loot debate comes out of the following three situations:
1. An item has stats that are good for more then one type (for example a ring that’s good for cat/bear-druids and rogues).
2. A player insists on rolling on items for both his specs.
3. A player’s opinion about either of the above differs from the person he’s rolling against.
I came across this blog a few days ago: http://hi-voltage.blogspot.com/2009/07/rune-edge-melee-or-hunter-weapon.html
The Rune Edge is a classic example of an item good for multiple classes including hunters, traditionally seen as the class that seems to want everything.
Let’s look at the item. It’s a (relatively) fast two-handed sword with good DPS and high top end damage. It also has 121 Agility and 120 Stamina and provides further bonuses 86 critical strike rating, 160 attack power and 70 armor penetration rating. This makes it attractive to a lot of people: Paladins, Warriors, Death Knights and Hunters. In my guild this would not be a problem, we use a points system so whoever can use it can have a bid.
The offensive stats make it tasty for the melee classes, good damage range, decent speed, lots of crit and some armor penetration. The agility/attack power and armor penetration make it also very good for a hunter, but they (obviously) would make less use of the physical damage of the weapon. It’s a very tough call to make.
Because of the ambiguity of the item I would open it to everyone, sure the hunter won’t use the damage range, but they would improve their stats very well with this equipped. The paladin and warrior would likely be better served with a sword with strength instead of agility so it’s not optimal for them either.
My advice: look at who wants it. Compare relative upgrades. If it’s equal for a melee and a ranged class, roll. Sure it’s random but what else can you do? It’s, ironically almost, the fairest way to settle this. Try not to get upset when you lose either. I always find that when I lose on something like this, a similar or better item tends to come up pretty quick to make things right. Realise as well that the other guy would have felt the same had you won it.
In the end it's not just an upgrade for you alone, it's an upgrade for the raid/guild. You benefit too, if indirectly.
Remember: the things you own end up owning you.